Burner



FIG. 1 perspective view

FIG. 2 side view

FIG. 3 plan view

FIG. 4 view taken from the left side of FIG. 2.

FIG. 5 view taken from the right side of FIG. 2; and,

FIG. 6 underneath view. 

The ornamental design for a burner, as shown and described. 